Try Antenna, Accoustiguide or Soundtrack/Thwaite Productions. I have used all three companies over the years and they are all competitive. A lot just depends on the type of equipment that you want to use. Tom Kelly wrote in message <[log in to unmask]>... >Hi. > >I'd like to learn more about the various "electronic docent" systems now >available in the U.S. Does anyone know about vendors, etc.? > >Tom